Sites Relevant to Collyweston

		Information
Stone Industry's Homepage	http://www.natural-stone.com/	Information regarding stone
National Trust	http://www.nationaltrust.org.uk/	General information
English Heritage	http://www.english-heritage.org.uk/	General information
Stone Roofing Association	http://www.stoneroof.org.uk	Geological Map, but also a wealth of information on stone roofing
National Federation of Roofing Contractors	http://www.nfrc.co.uk/	Roofing information
Society for the Protection of Ancient Buildings	http://www.spab.org.uk/	General information

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